CHUD.com Community › Forums › CULTURE, HUMOR, & FREE FORM › Misc. Culture › This Optical Illusion is Tripping Me Out
New Posts  All Forums:Forum Nav:

This Optical Illusion is Tripping Me Out - Page 2

post #51 of 88
6/29/07 at 1:01pm
I can make her switch directions at will, without covering anything up. It is kinda cool.
Reply
post #52 of 88
6/29/07 at 1:22pm
Quote:
Originally Posted by Diva
That's what works for me. So bizarre. I can't figure out how it happens and I want to know DAMMIT!
Aren't you a psychology person?

There's nothing about the spinning silhouette the brain can use to figure out which way it's spinning; that silhouette would look exactly the same regardless of the direction of spin. So the brain decides arbitrarily whether it's seeing something spinning clockwise or widdershins, and it seems to flip back and forth.

That's the theory, anyway. It's not hard to lock on to clockwise.

The two grey squares with one in shadow always messes me up. It's absolutely hard to believe, but it's true. My cat's whiskers look white against her black fur, but black against my hand. I imagine that's the same thing.
Reply
post #53 of 88
6/29/07 at 1:23pm
Quote:
Originally Posted by Timo
Interesting. What I'd like to know is why is it always spinning clockwise when I first look at it and then it turns counter-clockwise. Why not the other way around?
I think it has to do with the vertical axis. If she's spinning clockwise, she appears perfectly straight but once you switch to the counter-clockwise spin she's all wobbly.
Reply
post #54 of 88
6/29/07 at 1:56pm
Quote:
Originally Posted by Seabass Inna Bun
Aren't you a psychology person?
I'm a social psychologist, not a cognitive one.

Quote:
There's nothing about the spinning silhouette the brain can use to figure out which way it's spinning; that silhouette would look exactly the same regardless of the direction of spin. So the brain decides arbitrarily whether it's seeing something spinning clockwise or widdershins, and it seems to flip back and forth.
Yeah, I get that our mind determines the direction it spins. What I don't get is how the picture spins at all. That is, what does the actual 2-D picture look like? Is it a .gif going back and forth (but not spinning)? Or is it just a flat photo?
Reply
post #55 of 88
6/29/07 at 2:29pm
It's an animated gif... probably a 3D object that's been turned into a sillhouette.
Reply
post #56 of 88
6/29/07 at 2:32pm
I have no idea what kind of photo it is. That's why I'm asking.

Damn you for editing your post. Now my response seems unrelated.
Reply
post #57 of 88
6/29/07 at 2:36pm
Original Post: "Holy shit. You think it's a static picture?!"

I decided I was being a bit dickish.
Reply
post #58 of 88
6/29/07 at 2:50pm
Of course it's dickish, but also expected on CHUD.
Reply
post #59 of 88
7/1/07 at 1:36pm
Wooo. Only had to stare at it for about 15 mins. The tip to cover up the upper part of the body is what made it work in the end.
Reply
post #60 of 88
7/11/07 at 8:43pm
The picture say to go to moillusions.com and i can't find it there. Help please.
Reply
post #61 of 88
7/11/07 at 9:05pm
The picture wouldn't lie to you.
Reply
post #62 of 88
7/12/07 at 4:37am
Now that I've got it down...it's hard to stop her from just moving back and forth...I have to work to make her do a full rotation in one direction or the other.
Reply
post #63 of 88
8/22/07 at 8:55am
This one's kind of cool because the weirdness happens looking at your own hand:

http://www.digitalxpression.co.uk/dwheel.swf
Reply
post #64 of 88
8/22/07 at 12:13pm
That's messed up. My hand sudden has a bad case of the JACOB'S LADDER.
Reply
post #65 of 88
8/22/07 at 2:05pm
Hey, my hand's on acid! Very freaky.
Reply
post #66 of 88
8/22/07 at 3:39pm
We ARE plugged into the Matrix. I just saw through the lies.
Reply
post #67 of 88
8/22/07 at 4:09pm
There! Are! Four! Lights!
Reply
post #68 of 88
8/22/07 at 4:29pm
For a second, I felt like William Hurt in "Altered States". Real far out, man.
Reply
post #69 of 88
8/22/07 at 7:00pm
I couldn't stare at that damn thing for 60 seconds, but even after 20 or so I could see the effect. Trippy indeed.
Reply
post #70 of 88
8/22/07 at 11:02pm
I've done LSD, so I've seen my hand do similar things. That was a nice little trip down memory lane.

Incidentally, you should wait to post after watching that. Makes it kind of hard to type. The screen keeps moving around.
Reply
post #71 of 88
8/28/07 at 9:39pm
Check this one out.



Angry man on the left, woman on the right? Right?

Now move back about 6 feet from the computer.
Reply
post #72 of 88
8/28/07 at 9:51pm
Nothing. Are they supposed to look the same?
Reply
post #73 of 88
8/28/07 at 9:53pm
Quote:
Originally Posted by Vader
Nothing. Are they supposed to look the same?
They switch.
Reply
post #74 of 88
8/28/07 at 11:23pm
Oh, that is freaky.
Reply
post #75 of 88
8/28/07 at 11:51pm
Actually, moving back didn't do it for me. I had to squint and unfocus my eyes before anything happened.
Reply
post #76 of 88
8/29/07 at 2:16am
Depending on your screen size and resolution, you may actually have to move back 12+ feet to get a complete switch.

Squinting can get you a similar (although much noisier) effect.

The reason for that is that it takes advantage of the visual system's early processing. The light coming into your eyes gets processed as little contrast modulated packets of information of various sizes (spatial frequencies).

Those images can be created by taking two images, running a Fourier transform on each of them, and then cutting off the Fourier energy on the lower end of the spectrum for the one image while cutting off the Fourier energy on the higher end of the spectrum for the other image (basically low-pass filtering one and high-pass filtering the other) and then combining the results.

At first (at close range) you are seeing the image with the higher spatial frequency components in it, but as you back away (or squint), you can no longer resolve those components of the image and you "switch" over to seeing the lower spatial frequency components.
Reply
post #77 of 88
8/29/07 at 2:20am
Here is one of my favorite illusions that people might also like.



That is a stable image. No tricks. Completely static.
Reply
post #78 of 88
8/29/07 at 2:22am
Another of my favorites. Stare at the very center (the cross), and try not to move your eyes.

Reply
post #79 of 88
8/29/07 at 2:44am
That one's pretty rad.
Reply
post #80 of 88
8/29/07 at 4:03am
Just so I'm on the same page with that last one- you're supposed to see a clown face mouthing "do it", right?
Reply
post #81 of 88
8/29/07 at 10:15am
Quote:
Originally Posted by Patrick Ripoll
Because it's only a silouette, it's the exact same whether or her foot is pointing right at you or right away from you. Therefore, your brain sees her "spin" one way, but it's just as likely to see her "spin" another, so if you distract yourself or look away or do womething that diverts your attention, you can see her "spin" the other way.

Actually,it's the "angle" of her body. If you can't get her to spin counter clockwise, tilt your head to the right until she appears angled the other way, and she'll be spinning the other way for you.
Reply
post #82 of 88
8/29/07 at 12:39pm
Quote:
Originally Posted by kungfumonkeyMike
That is a stable image. No tricks. Completely static.
Wow, seriously? I swear that thing's moving.

I'm sending you my optometrist's bill.
Reply
post #83 of 88
8/29/07 at 2:24pm
Quote:
Originally Posted by Bailey
Just so I'm on the same page with that last one- you're supposed to see a clown face mouthing "do it", right?
It is actually an EVIL clown (to be more specific), and he is mouthing "JUST do it."
Reply
post #84 of 88
8/29/07 at 2:34pm
Quote:
Originally Posted by Belethedheliel
Actually,it's the "angle" of her body. If you can't get her to spin counter clockwise, tilt your head to the right until she appears angled the other way, and she'll be spinning the other way for you.
That "may" work for some people, but it is kind of accidental if it does.

It is mainly an attentional/expectation effect.

Probably the best way to alter your expectations and how you are attending to it is to look off to the side so that it is in your peripheral vision (where it is blurrier and harder to tell exactly what is going on). Then, (while still looking to the side), consider it spinning in whatever direction you would like. Once you can imagine it spinning that way (you can't actually tell because the image is kind of blurry in the periphery), look back at it, and it should hold whatever spin you were considering it to have while it was in your periphery.

I'm not sure how well I'm explaining that, but that may be the best way for people still having trouble.
Reply
post #85 of 88
10/5/07 at 6:36am
Quote:
Originally Posted by Timo
Interesting. What I'd like to know is why is it always spinning clockwise when I first look at it and then it turns counter-clockwise. Why not the other way around?
This is why.
Reply
post #86 of 88
10/5/07 at 6:42am
Quote:
Originally Posted by Timo
No matter how hard I try, I can't get a full rotation out of her. She just keeps shifting back and forth between clockwise and counter-clockwise.
Reply
post #87 of 88
10/5/07 at 10:42pm
That means you have a brain tumor. Go to the doctor.
Reply
post #88 of 88
10/6/07 at 8:21am
Quote:
Originally Posted by Greg David
That means you have a brain tumor. Go to the doctor.
The doctor...will she rotate clockwise or counter-clockwise?
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Misc. Culture
CHUD.com Community › Forums › CULTURE, HUMOR, & FREE FORM › Misc. Culture › This Optical Illusion is Tripping Me Out